package com.neutech.servlet;

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
@WebServlet(urlPatterns = "/sessionInfo")
public class SessionInfoServlet extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        HttpSession session = request.getSession(false);
        if (session != null) {
            String sessionId = session.getId();
            String customAttribute = (String)
                    session.getAttribute("customAttribute");
            response.getWriter().println("Session ID: " + sessionId + " 用户属性: " +
                    customAttribute);
        } else {
            response.getWriter().println("没有sessionid.");
        }
    }
}

